.flex-container {
  display: flex;
  flex-direction: column;
  margin: 90px 20%;
  background-color: hotpink;
}
.flex-container p {
  width: 110px;
  height: 110px;
  border: 2px red solid;
  text-align: center;
  font-size: 25px;
  line-height: 110px;
}
.f {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  background-color: green;
  align-items: baseline;
}
.f p {
  width: 110px;
  height: 110px;
  border: 2px red solid;
  font-size: 30px;
  text-align: center;
}
.l {
  display: flex;
  flex-direction: row-reverse;
  justify-content: space-around;
  background-color: greenyellow;
}
.l p {
  width: 110px;
  height: 110px;
  border: 3px red solid;
  font-size: 50px;
}
.e {
  display: flex;
  flex-direction: column-reverse;
}
.e p {
  width: 110px;
  height: 110px;
  border: 2px red solid;
  text-align: center;
  font-size: 25px;
}
.container {
  background-color: gray;
  color: hotpink;
  column-count: 3;
  column-gap: 50px;
  column-rule: 10px black solid;
  margin: auto 5%;
  font-size: 25px;
}
h2.kua {
  column-span: none;
  background-color: blue;
}
div.grid {
  display: grid;
  grid-template-columns: 100px 100px 100px;
  grid-template-rows: 100px;
  /* grid-gap可同时设置列间距和行间距 */
  grid-column-gap: 30px;
  grid-row-gap: 30px;
}
.grid div {
  text-align: center;
  line-height: 50px;
  border: 2px solid;
  margin: 2px;
}
div.gr {
  display: grid;
  grid-template-columns: 1fr 2fr 3fr;
  grid-template-rows: 100px 100px;
  /* grid-gap可同时设置列间距和行间距 */
  grid-column-gap: 30px;
  grid-row-gap: 30px;
}
.gr div {
  text-align: center;
  line-height: 50px;
  border: 2px solid;
  margin: 2px;
}
div.gd {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(50px, 1fr));
  grid-template-rows: repeat(3, 100px);

  grid-column-gap: 30px;
  grid-row-gap: 30px;
}
.gd div {
  text-align: center;
  line-height: 50px;
  border: 2px solid;
  margin: 2px;
}
/*grid还是要慢慢学习 */
